NI404 is an Open Source DIY Hardware Sampler + Sequencer

The NI404 is an open-source sampler and sequencer, based on the Teensy Microcontroller and Audioboard from PJRC, that’s designed to offer an accessible entry point into the world of music creation.


  • Easy to Use – The NI404 lets users create complex sound patterns without any prior knowledge of musical instruments or equipment. It’s perfect for beginners and makers alike.
  • Dynamic Control – At the heart of the NI404 is a 16×16 RGB LED panel display, paired with three rotary-push encoders. Navigate a cursor across the grid, where each row signifies a voice and each column a potential note, allowing for up to 16 pitches per note. This feature enables the mixing of up to 8 voices simultaneously.
  • Real-Time Interaction. – Adjust samples, instruments, pitches, notes, volume, BPM, velocity, and effects in real-time without pausing.
  • Etch-A-Sketch style note drawing
  • On-the-fly note deletion and sample muting
  • Adjustable volume, BPM (40 – 200), pattern, and note velocity
  • Up to 30-second sample length with seamless looping
  • Use your own samples on the SD-Card – in a simple file structure
  • Load up to 8 voices / samples (Wav format) plus an additional onboard synth voice
  • 16-bar patterns across 8 pages, totaling 128 bars per song
  • Save and load up to 100 patterns / songs on the SD card
  • Autosave and autoload functions
  • Access and manage samples while playing, with support for up to 999 samples on the SD card and the ability to predefine multiple voices as a SampleSet.
  • Fully Independent – Operates without a computer, generating all sounds on the device itself.
  • USB powered (5V) and Arduino code is published under the MIT License.

Find out more on the project website.


Das Keyboard 6 Professional - Begin to enjoy your modern workday.

Dr.Fone V13 One-Stop Complete Mobile Solution

Wondershare RecoveritData Recovery

Exclusive Education Savings for Wondershare

Sam Ash $50 Gift Certificate Offer

Pro Desktop Microphone: Save 50% With Code CREATE

Sam Ash Deals Shop: Save Up to 60% on Musical Instruments and Pro Sound Equipment

Great deals on Live Sound and Lighting gear. Microphones, speakers, mixers and more. Fast, free shipping.

Great deals on Recording Gear. Interfaces, headphones, monitors and more. Fast, free shipping.

Great deals on DJ and Production Gear. Fast, free shipping.

Sam Ash Music Flash Deals: Special Discounts on Musical Instruments & Music Studio Gear

Shop Used Musical Instruments, Used Guitars, Used Drums, Used Pianos, Used Pro Audio Gear, Used DJ Equipment

Samson Recording Headphones: Save Up to 70%

ARC Studio - Make any studio monitors sound better

ARC 4 - Mix faster and more confidently than ever


T-RackS singles €/$29.99 sale

AmpliTube 5 €/$49.99 sale

€/$39.99 AmpliTube Collections

T-RackS 5 €/$49.99 - 22 mixing & mastering plugins

Up to 50% off Total Studio 4 MAX complete music production software bundle

TONEX ODS Legends Signature Collection

Pianoverse NY Grand S274

Pianoverse Black Diamond B280

Pianoverse Royal Upright Y5

Pianoverse Concert Grand YF3

Pianoverse piano virtual instrument

UNO Synth true analog synthesizer - ultra-portable and ultra-affordable

iRig HD X

iRig USB mobile audio interface for guitar & bass

UNO Synth Pro X Paraphonic dual filter analog synthesizer

Leave a comment

Name: (Required)

eMail: (Required)